I bought this piece of art (framed) at the goodwill bins for $0.65 as I thought it was funny and totally something I'd hang up in my home. Upon getting home I look up the artists name to find that John Callahan was disabled and successful in his career as a cartoonist and artist, and is also local to Portland, OR which is where I am located—cool, I love a local artist!

I have found prints and memorabilia of a different, and more polished version of this drawing that say "screwed up" instead of "fucked up" but didn't find any trace of this version, nor many sales for original drawings other than one ended Sotheby's listing. I do believe this is an original given the paper as there is an imprint, or some kind of shadow mark left from the notepad that the drawing was drawn in.

Any insight into this pieces value would be appreciated, thanks!

Low down: My very Christian boss doesn’t like my belt buckle. I’ve been wearing it for decades, but just recently started looking into its history and worth. It’s obviously a Tech Ether Guild design, but I can’t find out if it’s an early piece or a knock off. Apparently there’s a fan base that collects them.
Any information is appreciated. Even just pointing me in the right direction.

I have an original piece my grandfather gifted me from his personal collection. How much does it go for? Not trying to sell it just curious so estimates are fine!